Push the customer's connected domain to the central connected-domains registry
so it appears under My Domains (with Transfer in if not registered with Ladill).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Customers can connect their own domain to a events page (storefront/event):
add a domain, point an A record (apex + www) to the app server, click Verify —
DNS is checked, then Ladill Domains' central SSL service issues + installs the
Let's Encrypt cert and calls back to flip it live. The custom domain then serves
the mapped page (host resolution on /). Feature-gated: only active when a Domains
SSL API key is set, so this deploy is inert until wired.
- custom_domains table + CustomDomain model
- CustomDomainService (DNS verify, request cert), DomainsSslClient, DnsResolver
- settings UI panel, signed SSL callback receiver, host resolution on /
- feature tests (DNS verify/fail, signed callback, ownership)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>